diy solar

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  • Post in thread: AliExpress LifePo4 battery.

    Hi! I bought one of this LifePo4 70AH all in one. And now I want to test capacity, Did a test with a inverter and ran for 1 hour and with a watt meter got 0.47kwh but stopped at 12.0v is it ok to go lower, like you can see in description of the add its down to 9,6 and that seems quite low for...
  • Post in thread: Sailboat Size vs LFP Capacity

    30ft motorboat. 1690ah 12V LifePo4. 1300 watts solar and per day use is 2,7-2,8 KW
  • Post in thread: Found this battery in Sweden!

    Hi! Found this spec sheet, Seems a bit over the top, check the BMS settings. Discharge cut off: 2,0 per cell (8V) And over charge: 3,9 per cell (15.6v) Is this evern ok? Feels a bit all over the place! And the SOC table hmmmm..........
  • Post in thread: Conceptual drawing

    Wow. Yea kind of nice to charge in just two hours. What kind of Battery are you buying? The only one I can find must be the FuelZero. The maximum charge current for them are 25 each so you will be just on the edge there. Or have I missed something?
  • Post in thread: How many KWh do You have?

    My bad, but a boat is a boat right? Well then I mean Targets ;) WOW 2,6MWh, where can i find one on Ebay? XD
  • Post in thread: How Many Are Building vs. Buying?

    Got 400Ah 48V for electric motor on the boat. Got 1690Ah 12V for house bank. All but one set is 200ah prismatic from AliExpress. its a set of 190ah from AliExpress. To charge i have 1360W of solar to charge the 12V. Overbuild? Yea you can say that XD
  • Post in thread: System Design Check

    Hi, why use one of the solar controllers to charge the starter battery? and from what I see you are using you’re Orion TR to charge the house bank when the generator kick in? or are you using the starter battery for more then just start? my recommendation is too use both solar chargers for the...
  • Post in thread: How many KWh do You have?

    Hey all! Just wondering how many KWh do You have on your boats? And what kind of chemistry? Maybe mods will move but could be fun to know ;) Ceers! And thanks for all help here and from Will!
  • Post in thread: Conceptual drawing

    Hi! Why 4 inverters? Only need one, max 2 for dual strings. And also with 14Kwh of power its not that long of grid. What do you want to power?
  • Post in thread: Use different sice of cells.

    Hey Guys! I have 4 200ah cells left over from a 48v pack and I’m wondering is it possible to use them for a 12 v pack with 4 190ah cells. ofc I will use one 200 and one 190 and parallel them! Then go series! not a nativ English writer so hope you understand what’s at stake ? oh and I will...
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